From patchwork Mon Dec 21 11:39:08 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andy Yan X-Patchwork-Id: 7895211 Return-Path: X-Original-To: patchwork-linux-rockchip@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 151A99F349 for ; Mon, 21 Dec 2015 11:42:01 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 13AE92047D for ; Mon, 21 Dec 2015 11:42:00 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.9]) (using TLSv1.2 with cipher AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 9D8B32044B for ; Mon, 21 Dec 2015 11:41:58 +0000 (UTC) Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1aAyqj-00009A-Dk; Mon, 21 Dec 2015 11:41:57 +0000 Received: from regular1.263xmail.com ([211.150.99.131]) by bombadil.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1aAyqR-0008Mn-Tb; Mon, 21 Dec 2015 11:41:41 +0000 Received: from andy.yan?rock-chips.com (unknown [192.168.167.110]) by regular1.263xmail.com (Postfix) with SMTP id 58CAF3CA4; Mon, 21 Dec 2015 19:41:12 +0800 (CST) X-263anti-spam: KSV:0; X-MAIL-GRAY: 0 X-MAIL-DELIVERY: 1 X-KSVirus-check: 0 X-ABS-CHECKED: 4 X-ADDR-CHECKED: 0 Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.263.net (Postfix) with ESMTP id 1C9682D399; Mon, 21 Dec 2015 19:41:04 +0800 (CST) X-RL-SENDER: andy.yan@rock-chips.com X-FST-TO: robh+dt@kernel.org X-SENDER-IP: 58.22.7.114 X-LOGIN-NAME: andy.yan@rock-chips.com X-UNIQUE-TAG: <4140b8ce360d017cb7ed383ab2088282> X-ATTACHMENT-NUM: 0 X-SENDER: yxj@rock-chips.com X-DNS-TYPE: 0 Received: from localhost.localdomain (unknown [58.22.7.114]) by smtp.263.net (Postfix) whith ESMTP id 1385293CXWF; Mon, 21 Dec 2015 19:41:07 +0800 (CST) From: Andy Yan To: robh+dt@kernel.org, heiko@sntech.de, arnd@arndb.de, john.stultz@linaro.org Subject: [PATCH 4/6] soc: rockchip: add reboot mode driver Date: Mon, 21 Dec 2015 19:39:08 +0800 Message-Id: <1450697948-30205-1-git-send-email-andy.yan@rock-chips.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1450697249-29994-1-git-send-email-andy.yan@rock-chips.com> References: <1450697249-29994-1-git-send-email-andy.yan@rock-chips.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20151221_034141_151985_4E116883 X-CRM114-Status: GOOD ( 14.71 ) X-Spam-Score: -1.9 (-) X-BeenThere: linux-rockchip@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Upstream kernel work for Rockchip platforms List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: mark.rutland@arm.com, geert+renesas@glider.be, catalin.marinas@arm.com, will.deacon@arm.com, linux-kernel@vger.kernel.org, alexandre.belloni@free-electrons.com, lorenzo.pieralisi@arm.com, linux@arm.linux.org.uk, dbaryshkov@gmail.com, linux-rockchip@lists.infradead.org, joel@jms.id.au, treding@nvidia.com, wxt@rock-chips.com, devicetree@vger.kernel.org, khilman@linaro.org, pawel.moll@arm.com, ijc+devicetree@hellion.org.uk, akpm@linux-foundation.org, linux-arm-kernel@lists.infradead.org, moritz.fischer@ettus.com, gregkh@linuxfoundation.org, sjg@chromium.org, sre@kernel.org, galak@codeaurora.org, olof@lixom.net, Andy Yan , jun.nie@linaro.org MIME-Version: 1.0 Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+patchwork-linux-rockchip=patchwork.kernel.org@lists.infradead.org X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP rockchip platform have a protocol to pass the kernel reboot mode to bootloader by some special registers when system reboot. By this way the bootloader can take different action according to the different kernel reboot mode, for example, command "reboot loader" will reboot the board to rockusb mode, this is a very convenient way to get the board enter download mode. Signed-off-by: Andy Yan --- drivers/soc/rockchip/Kconfig | 8 ++++++ drivers/soc/rockchip/Makefile | 1 + drivers/soc/rockchip/loader.h | 22 +++++++++++++++ drivers/soc/rockchip/reboot.c | 66 +++++++++++++++++++++++++++++++++++++++++++ 4 files changed, 97 insertions(+) create mode 100644 drivers/soc/rockchip/loader.h create mode 100644 drivers/soc/rockchip/reboot.c diff --git a/drivers/soc/rockchip/Kconfig b/drivers/soc/rockchip/Kconfig index 7140ff8..855d518 100644 --- a/drivers/soc/rockchip/Kconfig +++ b/drivers/soc/rockchip/Kconfig @@ -15,4 +15,12 @@ config ROCKCHIP_PM_DOMAINS If unsure, say N. +config ROCKCHIP_REBOOT + bool "Rockchip reboot mode driver" + select REBOOT_MODE + help + Say y here will enable reboot notifier support. + This will get reboot mode arguments from userspace and + store it in special register. + endif diff --git a/drivers/soc/rockchip/Makefile b/drivers/soc/rockchip/Makefile index 3d73d06..9817496 100644 --- a/drivers/soc/rockchip/Makefile +++ b/drivers/soc/rockchip/Makefile @@ -2,3 +2,4 @@ # Rockchip Soc drivers # obj-$(CONFIG_ROCKCHIP_PM_DOMAINS) += pm_domains.o +obj-$(CONFIG_ROCKCHIP_REBOOT) += reboot.o diff --git a/drivers/soc/rockchip/loader.h b/drivers/soc/rockchip/loader.h new file mode 100644 index 0000000..bf51baa --- /dev/null +++ b/drivers/soc/rockchip/loader.h @@ -0,0 +1,22 @@ +#ifndef __MACH_ROCKCHIP_LOADER_H +#define __MACH_ROCKCHIP_LOADER_H + +/*high 24 bits is tag, low 8 bits is type*/ +#define SYS_LOADER_REBOOT_FLAG 0x5242C300 + +enum { + BOOT_NORMAL = 0, /* normal boot */ + BOOT_LOADER, /* enter loader rockusb mode */ + BOOT_MASKROM, /* enter maskrom rockusb mode (not support now) */ + BOOT_RECOVER, /* enter recover */ + BOOT_NORECOVER, /* do not enter recover */ + BOOT_SECONDOS, /* boot second OS (not support now)*/ + BOOT_WIPEDATA, /* enter recover and wipe data. */ + BOOT_WIPEALL, /* enter recover and wipe all data. */ + BOOT_CHECKIMG, /* check firmware img with backup part*/ + BOOT_FASTBOOT, /* enter fast boot mode */ + BOOT_SECUREBOOT_DISABLE, + BOOT_CHARGING, /* enter charge mode */ + BOOT_MAX /* MAX VALID BOOT TYPE.*/ +}; +#endif diff --git a/drivers/soc/rockchip/reboot.c b/drivers/soc/rockchip/reboot.c new file mode 100644 index 0000000..eb580b5 --- /dev/null +++ b/drivers/soc/rockchip/reboot.c @@ -0,0 +1,66 @@ +/* + * Copyright (c) 2014, Fuzhou Rockchip Electronics Co., Ltd + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + */ +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include "loader.h" + +struct regmap *map; +u32 offset; + +static int rockchip_reboot_mode_write(int magic) +{ + pr_info("%s---------magic:%x\n", __func__, magic); + regmap_write(map, offset, magic); + +} + +static int __init rockchip_reboot_probe(struct platform_device *pdev) +{ + struct rockchip_reboot *reboot; + int ret; + + map = syscon_regmap_lookup_by_phandle(pdev->dev.of_node, + "rockchip,regmap"); + if (IS_ERR(map)) + return PTR_ERR(map); + + if (of_property_read_u32(pdev->dev.of_node, "offset", &offset)) + return -EINVAL; + + ret = reboot_mode_register(&pdev->dev, rockchip_reboot_mode_write); + if (ret) + dev_err(&pdev->dev, "can't register reboot mode\n"); + + return ret; +} + +static const struct of_device_id rockchip_reboot_of_match[] = { + { .compatible = "rockchip,reboot-mode" }, + {} +}; + +static struct platform_driver rockchip_reboot_driver = { + .probe = rockchip_reboot_probe, + .driver = { + .name = "rockchip-reboot", + .of_match_table = rockchip_reboot_of_match, + }, +}; +module_platform_driver(rockchip_reboot_driver); + +MODULE_AUTHOR("Andy Yan